本文主要是介绍纯css二级导航偌,纯css3实现的竖形二级导航，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
之前为大家分享了好多导航菜单。今天给大家带来一款纯css3实现的竖形二级导航。这款导航菜单可以是无限级。一起看下效果图：
实现的代码。
html代码：
- Menu 1
- Submenu 1.1
- Submenu 1.1.1
- Submenu 1.1.2
- Submenu 1.1.2.1
- Submenu 1.1.2.2
- Submenu 1.2
- Submenu 1.1
- Menu 2
- Submenu 2.1
- Submenu 2.2
- Menu 3
- Submenu 3.1
- Submenu 3.2
css3代码：
.W1-h16 {
padding: 0;
margin: 0;
border: 0;
line-height: 1;
}
.W1-h16 ul,
.W1-h16 ul li,
.W1-h16 ul ul {
list-style: none;
margin: 0;
padding: 0;
}
.W1-h16 ul {
position: relative;
z-index: 500;
float: left;
}
.W1-h16 ul li {
float: left;
min-height: 0.05em;
line-height: 1em;
vertical-align: middle;
position: relative;
}
.W1-h16 ul li.hover,
.W1-h16 ul li:hover {
position: relative;
z-index: 510;
cursor: default;
}
.W1-h16 ul ul {
visibility: hidden;
position: absolute;
top: 100%;
left: 0px;
z-index: 520;
width: 100%;
}
.W1-h16 ul ul li {
float: none;
}
.W1-h16 ul ul ul {
top: 0;
right: 0;
}
.W1-h16 ul li:hover > ul {
visibility: visible;
}
.W1-h16 ul ul {
top: 0;
left: 99%;
}
.W1-h16 ul li {
float: none;
}
.W1-h16 ul ul {
margin-top: 0.05em;
}
.W1-h16 {
width: 13em;
background: #333333;
font-family: 'Oxygen Mono', Tahoma, Arial, sans-serif;
zoom: 1;
}
.W1-h16:before {
content: '';
display: block;
}
.W1-h16:after {
content: '';
display: table;
clear: both;
}
.W1-h16 a {
display: block;
padding: 1em 1.3em;
color: #ffffff;
text-decoration: none;
text-transform: uppercase;
}
.W1-h16 > ul {
width: 13em;
}
.W1-h16 ul ul {
width: 13em;
}
.W1-h16 > ul > li > a {
border-right: 0.3em solid #1b9bff;
color: #ffffff;
}
.W1-h16 > ul > li > a:hover {
color: #ffffff;
}
.W1-h16 > ul > li a:hover,
.W1-h16 > ul > li:hover a {
background: #1b9bff;
}
.W1-h16 li {
position: relative;
}
.W1-h16 ul li.has-sub > a:after {
content: '?';
position: absolute;
right: 1em;
}
.W1-h16 ul ul li.first {
-webkit-border-radius: 0 3px 0 0;
-moz-border-radius: 0 3px 0 0;
border-radius: 0 3px 0 0;
}
.W1-h16 ul ul li.last {
-webkit-border-radius: 0 0 3px 0;
-moz-border-radius: 0 0 3px 0;
border-radius: 0 0 3px 0;
border-bottom: 0;
}
.W1-h16 ul ul {
-webkit-border-radius: 0 3px 3px 0;
-moz-border-radius: 0 3px 3px 0;
border-radius: 0 3px 3px 0;
}
.W1-h16 ul ul {
border: 1px solid #0082e7;
}
.W1-h16 ul ul a {
color: #ffffff;
}
.W1-h16 ul ul a:hover {
color: #ffffff;
}
.W1-h16 ul ul li {
border-bottom: 1px solid #0082e7;
}
.W1-h16 ul ul li:hover > a {
background: #4eb1ff;
color: #ffffff;
}
.W1-h16.align-right > ul > li > a {
border-left: 0.3em solid #1b9bff;
border-right: none;
}
.W1-h16.align-right {
float: right;
}
.W1-h16.align-right li {
text-align: right;
}
.W1-h16.align-right ul li.has-sub > a:before {
content: '+';
position: absolute;
top: 50%;
left: 15px;
margin-top: -6px;
}
.W1-h16.align-right ul li.has-sub > a:after {
content: none;
}
.W1-h16.align-right ul ul {
visibility: hidden;
position: absolute;
top: 0;
left: -100%;
z-index: 598;
width: 100%;
}
.W1-h16.align-right ul ul li.first {
-webkit-border-radius: 3px 0 0 0;
-moz-border-radius: 3px 0 0 0;
border-radius: 3px 0 0 0;
}
.W1-h16.align-right ul ul li.last {
-webkit-border-radius: 0 0 0 3px;
-moz-border-radius: 0 0 0 3px;
border-radius: 0 0 0 3px;
}
.W1-h16.align-right ul ul {
-webkit-border-radius: 3px 0 0 3px;
-moz-border-radius: 3px 0 0 3px;
border-radius: 3px 0 0 3px;
}
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